Variability of deformation of egg shell of depending on genotype and age of hens

Abstract

Here we have results of examination of eggs quality in two light line hybrids of chickens (Hisex Brown and Shawer 579). At the end of every four-week period an examination of external qualities of eggs was carried out. The examination was carried out on the sample of 30 eggs for each hybrid. There were total of ten examinations. The aim of these researches was to examine effects of genotype and age of hens on deformation of egg shell in 10-month period. Obtained measuring average of egg shell deformation for Shawer 579 was 26.27/1000mm and it was a little higher than deformation in Hisex Brown (25.82/1000mm). On the basis of the research, it was noticed that with the age of hen, deformation of egg shell increases, too. Higher range of variability in egg shell deformation in 4-week periods of examinations was found in Hisex, but differences were not significant. Accordingly, differences between obtained results for egg shell deformation in examined hens were very small.

U radu su izloženi rezultati ispitivanja kvaliteta jaja dva laka linijska hibrida kokoši (Hisex Brown i Shaver 579). Krajem svakog 4-nedeljnog perioda obavljeno je ispitivanje spoljašnjih osobina kvaliteta jaja. Ispitivanje je vršeno na uzorku od 30 jaja za svaki hibrid. Ukupno je izvršeno 10 ispitivanja. Cilj ovih istraživanja, bio je da se ispita uticaj genotipa i uzrasta nosilja na deformaciju ljuske kokošijeg jajeta u periodu od 10 meseci. Dobijeni prosek merenja deformacije ljuske jajeta za Shaver 579 nosilje iznosio je 26,27/1000 mm i bio je nešto veći u odnosu na deformaciju koju je imao Hisex Brown (25,82/1000 mm). Na osnovu istraživanja, zapaženo je da se sa uzrastom nosilja deformacija ljuske jajeta povećavala. Veći raspon variranja deformacije ljuske jajeta po 4-nedeljnim periodima ispitivanja imale su nosilje Hisex, ali razlike nisu bile signifikantne. Prema tome, razlike između dobijenih rezultata za deformaciju ljuske kokošijih jaja kod ispitivanih nosilja, bile su zanemarljivo male.